I use atleast 3 fleets in one single armada most of the time, each with between 8 and 16 ships and an additional 2 fleets if resources permit.

Fleet 1 = Defiant Class - Their hull strength makes them ideal for destroying the largest of vessels/stations and their size means that many torpedos miss easily, great in both offence and defence.

Fleet 2 = Intrepid Class - Very good for combatting the Rheinn class and similar ships, their photons give them a firepower advantage against the medium sized ships and the Tricobalt Torpedos are a great way to take out those vessels that drift just wide of your fleet, however vs large vessels and stations the Intrepid class is weak.

Fleet 3 = Akira Class - Fantastic for taking out the smallest ships, also great fire on the largest, especially cubes. The Point Defence makes them fantastic vs all torpedo loaded ships but very weak vs all phaser and disrupter heavy vessels.

Additional Fleet 1 = Sovereign Class - Their quantum torpedos make them ideal for taking out the largest vessels and stations while their phasers are powerful enough to deal with all ship sizes. Their shield and hull strength is high enough to take a fair beating which makes them the best all-round ship.

Additional Fleet 2 = Repair/Support - In this fleet I usually have 2 Canaveral class ships to each Newton class I have, ideally I would have 4 Newton class with 8 Canaveral class vessels and, if I can spare them, 4 Excelsior-II class ships.

I micromanage all my fights, check what I'm fighting and direct my fleets to take out individual targets that are threats to my other fleets.

lol, awww <3 aint u a sweety.    

I said their hull strength made them ideal for taking on large ships. The pulse phasers are less effective against the largest ships but even at 60% they are very dangerous when combined with the hull strength they can endure alot of punishment. I admit tho that with less than 12 defiant class ships you sometimes have to take alot of damage, which is why I tend to focus alot of my resources on building defiant class ships.

Ok, maybe I am slightly wrong... but thinking of it from a more development point of view, Akiras are great for taking on Rheinn type ships when you can get Akiras, but very often it seems to me that your opponent has upgraded Rheinn class ships before you've even researched Chassis 2.

Very true, that's one of the first things I do as a Romulan.

dont forget all these ideas are going to be scrapped for the new balancing lol but keep using them for know

Well, I only just started playing FO so I figure may aswell get into as fast as... I know balancing is gonna change but if doin this nooby stuff now means i'll be better off when v3 comes out... well its worth it.